Sorry for taking a while to answer. There are no new commits yet, need to polish some more things before pushing it to the main branch.
About your question, emissive has been supported from the start. Point lights still aren’t supported (they need a slightly different handling that the others so haven’t found the time to do it yet).
And about the thing you quote, no idea what’s the problem tbh, never tried that particular map, but it can be the ambient term and lost ray color. Not having any light and setting that to 0 results on a pitch black room (or at least it should).
I’m also working now on getting multiple bounces, that should improve quality quite a bit (specially since it would add bounces for emissive). Will hope to have that along the new reflection code soon.